IO308 error in ADSUBCON for outbound deliveries

Hi Experts,

We are into ECCDIMP 606 SP-Level 0009. We are getting a hard stop error message when creating outbound delivery for a sub contracting PO in ADSUBCON transaction. This is only happening for Serial number assigned part numbers in a subcontracting PO. Account assignment is to a maintanence order. Error message is Difference in object list header data. Checked for the note 1603228. But this is not valid for our SP level.

Thanks

Rijil